I’m having an issue with my grow leaves are turning purple and curling thought it was light toxicity so I moved the 300w LED to 24 inches away. 16x16x48 grow tent using grow big, micro from advanced nutrients and calmag. Feeding at 800 ppm @ 6.7 ph Sent from my iPhone using Grasscity Forum
It looks like you had some problems at the beginning with N, P, and K,, but more P, and K, but now it seems to have worked it's self out, but still for now I would cut back a little on "grow big", as your new grow tips aren't just yellowing they are actually browning, getting completely burnt.